ghsa-xfhg-9pjg-xg7g
Vulnerability from github
Published
2022-08-26 00:03
Modified
2024-11-18 23:03
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
VTK NULL pointer dereference vulnerability
Details

There is a NULL pointer dereference vulnerability in VTK, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn't check the return value of libxml2 API 'xmlDocGetRootElement', and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "vtk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-42521"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-09-16T18:47:42Z",
    "nvd_published_at": "2022-08-25T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "There is a NULL pointer dereference vulnerability in VTK, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn\u0027t check the return value of libxml2 API \u0027xmlDocGetRootElement\u0027, and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application.",
  "id": "GHSA-xfhg-9pjg-xg7g",
  "modified": "2024-11-18T23:03:45Z",
  "published": "2022-08-26T00:03:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42521"
    },
    {
      "type": "WEB",
      "url": "https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/vtk/PYSEC-2022-255.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://gitlab.kitware.com/vtk/vtk"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.kitware.com/vtk/vtk/issues/17818"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "VTK NULL pointer dereference vulnerability"
}


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